$info:blue;
$error:pink;

//声明函数
@mixin border-radius{
   
    -webkit-border-radius:50%;
    -moz-border-radius:50%;
    border-radius: 50%;

}

//嵌套
@mixin  h-ul{
    
    display: flex;
    justify-content: space-between;
    align-items: center;
    li{
        list-style: none;
    }
}

//参数
@mixin border($w,$s,$c) {
    border: $w $s $c;
}



html{
    margin: 0;
}